Type Material

            Holotype: "Male holotype and male paratype from Twentynine Palms, California, July 1 to 15, 1945 (Jefferson H. Branch), in the American Museum of Natural History" (Muma, 1951, p. 98).

            Measurements: : Male Holotype: Total Length, 25.5 - 26.0 mm. Chelicerae, 6.6 mm length; 2.2 mm width. Propeltidium 3.2 mm; 4.4 mm width. Palpi, 18.5 mm. 1st legs, 15.0 mm. 4th legs, 34.0 mm. Male Paratype: Total Length, 25.5 - 26.0 mm. Chelicerae, 6.6 mm length; 2.3 mm width. Propeltidium 3.4 mm; 4.4 mm width. Palpi, 18.5 mm. 1st legs, 15.0 mm. 4th legs, 35.0 mm.

            Palpal Description: "Metatarsus and tarsus of palpus entirely covered with numerous weak cylinder bristles. Metatarsus provided with a scopula of 70 to 150 papillae which extends from the base of the segment for about three-fourths of its length on the mesoventral surface. Metatarsus four times the length of the tarsus" (Muma, 1951, p. 98).

            Chelicerae Description: "Dentition of chelicerae as shown in figures 178 to 180. Movable finger strongly curved, with moderate-sized principal and anterior teeth and two distinct intermediate teeth. Fixed finger strongly bent dorsally at base, curved mesally at tip, and bearing several aborted teeth. Holotype with a tiny super- numerary fondal tooth between I and II on mesal row. Fourth fondal teeth barely dis-tinguishable from dentate socket margin of movable finger. Fondal notch obscure" (Muma, 1951, p. 96). "Fixed finger without mesal groove. Flagellum complex composed almost entirely of plumose setae which increase in size and flatness towards the end of the finger. Mesal setae of movable finger both plumose and simple" (Muma, 1951, p. 96-98).

Diagnosis:

Other Information: "The genus of which this striking solpugid is the type is named in honor of Jefferson H. Branch" (Muma, 1951, p. 98).